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Finding the Fourth Proportional to 73,871,998.80, 110,807,998.20 and 67,825,381.20

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Solution

The fourth proportional to 73,871,998.80, 110,807,998.20 and 67,825,381.20 is: 101,738,071.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,871,998.80 : 110,807,998.20 = 67,825,381.20 : x
  2. Step 2: Convert to fraction form
    73,871,998.80/110,807,998.20 = 67,825,381.20/x
  3. Step 3: Cross multiply
    73,871,998.80x = 110,807,998.20 × 67,825,381.20
  4. Step 4: Simplify right side
    73,871,998.80x = 7,515,594,717,923,914
  5. Step 5: Solve for x
    x = 7,515,594,717,923,914/73,871,998.80
  6. Step 6: Final answer
    x = 101,738,071.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.